dishonesty vs quackery

dishonesty and quackery both are nouns.

Word	Noun	Adjective	Verb	Adverb
dishonesty	Yes	No	No	No
quackery	Yes	No	No	No

As nouns, quackery is a hyponym of dishonesty; that is, quackery is a word with a more specific, narrower meaning than dishonesty:

Other hyponyms of dishonesty include betrayal, perfidy, treachery, treason, charlatanism, trick, falsehood, falsification.

dishonesty (noun)	quackery (noun)
lack of honesty; acts of lying or cheating or stealing	medical practice and advice based on observation and experience in ignorance of scientific findings
the quality of being dishonest	the dishonesty of a charlatan